You know that part where you get the white and yellow strped ball and the 3rd exclamation box that's high and by a tall pipe at the beginning of 6-7? I keep tryiing to throw the striped ball to hit that explamation box by that pipe at the beginning og 6-7 but ...

Hi all,
i'm on level 5 in wavy beach and i'm having trouble floating up to get the toad. Whenever i try to float up a group of bubbles always stops me and i'm having trouble obtaining the toad!
Please help as this is getting very frustrating! :P

I can't get to the third toad in Hoo's wood the first level. (2-1) I know where it is I just don't know how to get to it. It's where there's like two of those little white jumping guys and a flying red koopa troopa. How do I get to it?! Help me please!